Got a score of 284. I think it's good, you got the physics and the gameplay, and even the audio is good, but I think your graphics could have been better executed. Like the bullets are huge, and the planes are just rotated sprites that look all jittery and messy; if the planes were smaller and with fixed/properly drawn angles, and less distracting background (maybe with a little parallax), I reckon it's look a lot nicer. But good scope for a jam game!